When selecting your piece, keep in mind that your work will appear on a page and a screen. This is especially important for the poets, as in the ebook we cannot control the line breaks of the poem. The placement of your words on the screen is subject to the screen size, font size, and line-spacing of the e-reader.
See the images below for an example of how the formatting can change between the print edition and ebook edition. On a larger screen, the formatting is more-or-less similar to the print edition, but once the screen size is changed the formatting changes, too.